1 | /** @file
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2 | * IPRT - Fuzzing framework
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3 | */
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4 |
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5 | /*
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6 | * Copyright (C) 2018-2019 Oracle Corporation
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7 | *
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8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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9 | * available from http://www.virtualbox.org. This file is free software;
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10 | * you can redistribute it and/or modify it under the terms of the GNU
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11 | * General Public License (GPL) as published by the Free Software
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12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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15 | *
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16 | * The contents of this file may alternatively be used under the terms
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17 | * of the Common Development and Distribution License Version 1.0
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18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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19 | * VirtualBox OSE distribution, in which case the provisions of the
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20 | * CDDL are applicable instead of those of the GPL.
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21 | *
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22 | * You may elect to license modified versions of this file under the
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23 | * terms and conditions of either the GPL or the CDDL or both.
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24 | */
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25 |
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26 | #ifndef IPRT_INCLUDED_fuzz_h
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27 | #define IPRT_INCLUDED_fuzz_h
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28 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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29 | # pragma once
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30 | #endif
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31 |
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32 | #include <iprt/cdefs.h>
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33 | #include <iprt/types.h>
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34 |
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35 | RT_C_DECLS_BEGIN
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36 |
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37 | /** @defgroup grp_rt_fuzz RTFuzz - Data fuzzing framework
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38 | * @ingroup grp_rt
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39 | * @sa grp_rt_test
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40 | * @{
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41 | */
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42 |
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43 | /** A fuzzer context handle. */
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44 | typedef struct RTFUZZCTXINT *RTFUZZCTX;
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45 | /** Pointer to a fuzzer context handle. */
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46 | typedef RTFUZZCTX *PRTFUZZCTX;
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47 | /** NIL fuzzer context handle. */
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48 | #define NIL_RTFUZZCTX ((RTFUZZCTX)~(uintptr_t)0)
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49 | /** A fuzzer input handle. */
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50 | typedef struct RTFUZZINPUTINT *RTFUZZINPUT;
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51 | /** Pointer to a fuzzer input handle. */
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52 | typedef RTFUZZINPUT *PRTFUZZINPUT;
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53 | /** NIL fuzzer input handle. */
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54 | #define NIL_RTFUZZINPUT ((RTFUZZINPUT)~(uintptr_t)0)
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55 |
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56 |
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57 | /** Fuzzing observer handle. */
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58 | typedef struct RTFUZZOBSINT *RTFUZZOBS;
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59 | /** Pointer to a fuzzing observer handle. */
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60 | typedef RTFUZZOBS *PRTFUZZOBS;
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61 | /** NIL fuzzing observer handle. */
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62 | #define NIL_RTFUZZOBS ((RTFUZZOBS)~(uintptr_t)0)
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63 |
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64 |
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65 | /** @name RTFUZZCTX_F_XXX - Flags for RTFuzzCtxCfgSetBehavioralFlags
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66 | * @{ */
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67 | /** Adds all generated inputs automatically to the input corpus for the owning context. */
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68 | #define RTFUZZCTX_F_BEHAVIORAL_ADD_INPUT_AUTOMATICALLY_TO_CORPUS RT_BIT_32(0)
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69 | /** All valid behavioral modification flags. */
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70 | #define RTFUZZCTX_F_BEHAVIORAL_VALID (RTFUZZCTX_F_BEHAVIORAL_ADD_INPUT_AUTOMATICALLY_TO_CORPUS)
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71 | /** @} */
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72 |
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73 | /**
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74 | * Creates a new fuzzing context.
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75 | *
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76 | * @returns IPRT status code.
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77 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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78 | */
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79 | RTDECL(int) RTFuzzCtxCreate(PRTFUZZCTX phFuzzCtx);
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80 |
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81 | /**
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82 | * Creates a new fuzzing context from the given state.
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83 | *
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84 | * @returns IPRT status code.
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85 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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86 | * @param pvState The pointer to the fuzzing state.
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87 | * @param cbState Size of the state buffer in bytes.
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88 | */
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89 | RTDECL(int) RTFuzzCtxCreateFromState(PRTFUZZCTX phFuzzCtx, const void *pvState, size_t cbState);
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90 |
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91 | /**
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92 | * Creates a new fuzzing context loading the state from the given file.
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93 | *
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94 | * @returns IPRT status code.
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95 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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96 | * @param pszFilename File to load the fuzzing context from.
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97 | */
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98 | RTDECL(int) RTFuzzCtxCreateFromStateFile(PRTFUZZCTX phFuzzCtx, const char *pszFilename);
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99 |
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100 | /**
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101 | * Retains a reference to the given fuzzing context.
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102 | *
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103 | * @returns New reference count on success.
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104 | * @param hFuzzCtx Handle of the fuzzing context.
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105 | */
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106 | RTDECL(uint32_t) RTFuzzCtxRetain(RTFUZZCTX hFuzzCtx);
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107 |
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108 | /**
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109 | * Releases a reference from the given fuzzing context, destroying it when reaching 0.
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110 | *
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111 | * @returns New reference count on success, 0 if the fuzzing context got destroyed.
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112 | * @param hFuzzCtx Handle of the fuzzing context.
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113 | */
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114 | RTDECL(uint32_t) RTFuzzCtxRelease(RTFUZZCTX hFuzzCtx);
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115 |
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116 | /**
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117 | * Exports the given fuzzing context state.
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118 | *
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119 | * @returns IPRT statuse code
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120 | * @param hFuzzCtx The fuzzing context to export.
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121 | * @param ppvState Where to store the buffer of the state on success, free with RTMemFree().
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122 | * @param pcbState Where to store the size of the context on success.
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123 | */
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124 | RTDECL(int) RTFuzzCtxStateExport(RTFUZZCTX hFuzzCtx, void **ppvState, size_t *pcbState);
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125 |
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126 | /**
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127 | * Exports the given fuzzing context state to the given file.
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128 | *
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129 | * @returns IPRT status code.
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130 | * @param hFuzzCtx The fuzzing context to export.
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131 | * @param pszFilename The file to save the state to.
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132 | */
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133 | RTDECL(int) RTFuzzCtxStateExportToFile(RTFUZZCTX hFuzzCtx, const char *pszFilename);
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134 |
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135 | /**
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136 | * Adds a new seed to the input corpus of the given fuzzing context.
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137 | *
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138 | * @returns IPRT status code.
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139 | * @param hFuzzCtx The fuzzing context handle.
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140 | * @param pvInput The pointer to the input buffer.
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141 | * @param cbInput Size of the input buffer.
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142 | */
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143 | RTDECL(int) RTFuzzCtxCorpusInputAdd(RTFUZZCTX hFuzzCtx, const void *pvInput, size_t cbInput);
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144 |
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145 | /**
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146 | * Adds a new seed to the input corpus of the given fuzzing context from the given file.
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147 | *
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148 | * @returns IPRT status code.
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149 | * @param hFuzzCtx The fuzzing context handle.
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150 | * @param pszFilename The filename to load the seed from.
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151 | */
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152 | RTDECL(int) RTFuzzCtxCorpusInputAddFromFile(RTFUZZCTX hFuzzCtx, const char *pszFilename);
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153 |
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154 | /**
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155 | * Adds a new seed to the input corpus of the given fuzzing context from the given VFS file.
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156 | *
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157 | * @returns IPRT status code.
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158 | * @param hFuzzCtx The fuzzing context handle.
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159 | * @param hVfsFile The VFS file handle to load the seed from.
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160 | */
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161 | RTDECL(int) RTFuzzCtxCorpusInputAddFromVfsFile(RTFUZZCTX hFuzzCtx, RTVFSFILE hVfsFile);
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162 |
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163 | /**
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164 | * Adds new seeds to the input corpus of the given fuzzing context from the given directory.
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165 | *
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166 | * Will only process regular files, i.e. ignores directories, symbolic links, devices, fifos
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167 | * and such.
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168 | *
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169 | * @returns IPRT status code.
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170 | * @param hFuzzCtx The fuzzing context handle.
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171 | * @param pszDirPath The directory to load seeds from.
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172 | */
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173 | RTDECL(int) RTFuzzCtxCorpusInputAddFromDirPath(RTFUZZCTX hFuzzCtx, const char *pszDirPath);
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174 |
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175 | /**
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176 | * Restricts the maximum input size to generate by the fuzzing context.
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177 | *
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178 | * @returns IPRT status code
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179 | * @param hFuzzCtx The fuzzing context handle.
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180 | * @param cbMax Maximum input size in bytes.
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181 | */
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182 | RTDECL(int) RTFuzzCtxCfgSetInputSeedMaximum(RTFUZZCTX hFuzzCtx, size_t cbMax);
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183 |
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184 | /**
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185 | * Returns the maximum input size of the given fuzzing context.
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186 | *
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187 | * @returns Maximum input size generated in bytes.
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188 | * @param hFuzzCtx The fuzzing context handle.
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189 | */
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190 | RTDECL(size_t) RTFuzzCtxCfgGetInputSeedMaximum(RTFUZZCTX hFuzzCtx);
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191 |
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192 | /**
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193 | * Sets flags controlling the behavior of the fuzzing context.
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194 | *
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195 | * @returns IPRT status code.
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196 | * @param hFuzzCtx The fuzzing context handle.
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197 | * @param fFlags Flags controlling the fuzzing context, RTFUZZCTX_F_XXX.
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198 | */
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199 | RTDECL(int) RTFuzzCtxCfgSetBehavioralFlags(RTFUZZCTX hFuzzCtx, uint32_t fFlags);
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200 |
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201 | /**
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202 | * Returns the current set behavioral flags for the given fuzzing context.
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203 | *
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204 | * @returns Behavioral flags of the given fuzzing context.
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205 | * @param hFuzzCtx The fuzzing context handle.
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206 | */
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207 | RTDECL(uint32_t) RTFuzzCfgGetBehavioralFlags(RTFUZZCTX hFuzzCtx);
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208 |
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209 | /**
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210 | * Sets the temporary directory used by the fuzzing context.
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211 | *
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212 | * @returns IPRT status code.
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213 | * @param hFuzzCtx The fuzzing context handle.
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214 | * @param pszPathTmp The directory for the temporary state.
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215 | */
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216 | RTDECL(int) RTFuzzCtxCfgSetTmpDirectory(RTFUZZCTX hFuzzCtx, const char *pszPathTmp);
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217 |
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218 | /**
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219 | * Returns the current temporary directory.
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220 | *
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221 | * @returns Current temporary directory.
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222 | * @param hFuzzCtx The fuzzing context handle.
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223 | */
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224 | RTDECL(const char *) RTFuzzCtxCfgGetTmpDirectory(RTFUZZCTX hFuzzCtx);
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225 |
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226 | /**
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227 | * Reseeds the PRNG of the given fuzzing context.
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228 | *
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229 | * @returns IPRT status code.
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230 | * @param hFuzzCtx The fuzzing context handle.
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231 | * @param uSeed The new seed.
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232 | */
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233 | RTDECL(int) RTFuzzCtxReseed(RTFUZZCTX hFuzzCtx, uint64_t uSeed);
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234 |
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235 | /**
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236 | * Generates a new input from the given fuzzing context and returns it.
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237 | *
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238 | * @returns IPRT status code.
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239 | * @param hFuzzCtx The fuzzing context handle.
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240 | * @param phFuzzInput Where to store the handle to the fuzzed input on success.
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241 | */
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242 | RTDECL(int) RTFuzzCtxInputGenerate(RTFUZZCTX hFuzzCtx, PRTFUZZINPUT phFuzzInput);
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243 |
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244 | /**
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245 | * Mutates a raw buffer.
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246 | *
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247 | * @returns IPRT status code.
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248 | * @param hFuzzCtx The fuzzing context handle.
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249 | * @param pvBuf Pointer to the buffer to mutate.
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250 | * @param cbBuf Size of the buffer iny bytes to mutate.
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251 | * @param phFuzzInput Where to store the handle to the fuzzed input on success.
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252 | */
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253 | RTDECL(int) RTFuzzCtxMutateBuffer(RTFUZZCTX hFuzzCtx, void *pvBuf, size_t cbBuf,
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254 | PRTFUZZINPUT phFuzzInput);
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255 |
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256 |
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257 | /**
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258 | * Retains a reference to the given fuzzing input handle.
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259 | *
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260 | * @returns New reference count on success.
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261 | * @param hFuzzInput The fuzzing input handle.
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262 | */
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263 | RTDECL(uint32_t) RTFuzzInputRetain(RTFUZZINPUT hFuzzInput);
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264 |
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265 | /**
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266 | * Releases a reference from the given fuzzing input handle, destroying it when reaaching 0.
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267 | *
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268 | * @returns New reference count on success, 0 if the fuzzing input got destroyed.
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269 | * @param hFuzzInput The fuzzing input handle.
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270 | */
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271 | RTDECL(uint32_t) RTFuzzInputRelease(RTFUZZINPUT hFuzzInput);
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272 |
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273 | /**
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274 | * Queries the data pointer and size of the given fuzzing input.
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275 | *
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276 | * @returns IPRT status code
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277 | * @param hFuzzInput The fuzzing input handle.
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278 | * @param ppv Where to store the pointer to the input data on success.
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279 | * @param pcb Where to store the size of the input data on success.
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280 | */
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281 | RTDECL(int) RTFuzzInputQueryData(RTFUZZINPUT hFuzzInput, void **ppv, size_t *pcb);
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282 |
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283 | /**
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284 | * Queries the string of the MD5 digest for the given fuzzed input.
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285 | *
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286 | * @returns IPRT status code.
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287 | * @retval VERR_BUFFER_OVERFLOW if the size of the string buffer is not sufficient.
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288 | * @param hFuzzInput The fuzzing input handle.
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289 | * @param pszDigest Where to store the digest string and a closing terminator.
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290 | * @param cchDigest Size of the string buffer in characters (including the zero terminator).
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291 | */
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292 | RTDECL(int) RTFuzzInputQueryDigestString(RTFUZZINPUT hFuzzInput, char *pszDigest, size_t cchDigest);
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293 |
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294 | /**
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295 | * Writes the given fuzzing input to the given file.
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296 | *
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297 | * @returns IPRT status code.
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298 | * @param hFuzzInput The fuzzing input handle.
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299 | * @param pszFilename The filename to store the input to.
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300 | */
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301 | RTDECL(int) RTFuzzInputWriteToFile(RTFUZZINPUT hFuzzInput, const char *pszFilename);
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302 |
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303 | /**
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304 | * Adds the given fuzzed input to the input corpus of the owning context.
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305 | *
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306 | * @returns IPRT status code.
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307 | * @retval VERR_ALREADY_EXISTS if the input exists already.
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308 | * @param hFuzzInput The fuzzing input handle.
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309 | */
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310 | RTDECL(int) RTFuzzInputAddToCtxCorpus(RTFUZZINPUT hFuzzInput);
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311 |
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312 | /**
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313 | * Removes the given fuzzed input from the input corpus of the owning context.
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314 | *
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315 | * @returns IPRT status code.
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316 | * @retval VERR_NOT_FOUND if the input is not part of the corpus.
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317 | * @param hFuzzInput The fuzzing input handle.
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318 | */
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319 | RTDECL(int) RTFuzzInputRemoveFromCtxCorpus(RTFUZZINPUT hFuzzInput);
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320 |
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321 |
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322 | /**
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323 | * Fuzzed binary input channel.
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324 | */
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325 | typedef enum RTFUZZOBSINPUTCHAN
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326 | {
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327 | /** Invalid. */
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328 | RTFUZZOBSINPUTCHAN_INVALID = 0,
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329 | /** File input. */
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330 | RTFUZZOBSINPUTCHAN_FILE,
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331 | /** Input over stdin. */
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332 | RTFUZZOBSINPUTCHAN_STDIN,
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333 | /** The binary is a fuzzing aware client using the
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334 | * specified protocol over stdin/stdout. */
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335 | RTFUZZOBSINPUTCHAN_FUZZING_AWARE_CLIENT,
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336 | /** TCP server. */
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337 | RTFUZZOBSINPUTCHAN_TCP_SERVER,
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338 | /** TCP client. */
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339 | RTFUZZOBSINPUTCHAN_TCP_CLIENT,
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340 | /** UDP server. */
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341 | RTFUZZOBSINPUTCHAN_UDP_SERVER,
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342 | /** UDP client. */
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343 | RTFUZZOBSINPUTCHAN_UDP_CLIENT,
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344 | /** 32bit hack. */
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345 | RTFUZZOBSINPUTCHAN_32BIT_HACK = 0x7fffffff
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346 | } RTFUZZOBSINPUTCHAN;
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347 |
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348 | /**
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349 | * Fuzzing observer statistics.
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350 | */
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351 | typedef struct RTFUZZOBSSTATS
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352 | {
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353 | /** Number of fuzzed inputs per second. */
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354 | uint32_t cFuzzedInputsPerSec;
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355 | /** Number of overall fuzzed inputs. */
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356 | uint32_t cFuzzedInputs;
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357 | /** Number of observed hangs. */
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358 | uint32_t cFuzzedInputsHang;
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359 | /** Number of observed crashes. */
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360 | uint32_t cFuzzedInputsCrash;
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361 | } RTFUZZOBSSTATS;
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362 | /** Pointer to a fuzzing observer statistics record. */
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363 | typedef RTFUZZOBSSTATS *PRTFUZZOBSSTATS;
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364 |
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365 | /**
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366 | * Creates a new fuzzing observer.
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367 | *
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368 | * @returns IPRT status code.
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369 | * @param phFuzzObs Where to store the fuzzing observer handle on success.
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370 | */
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371 | RTDECL(int) RTFuzzObsCreate(PRTFUZZOBS phFuzzObs);
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372 |
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373 | /**
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374 | * Destroys a previously created fuzzing observer.
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375 | *
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376 | * @returns IPRT status code.
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377 | * @param hFuzzObs The fuzzing observer handle.
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378 | */
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379 | RTDECL(int) RTFuzzObsDestroy(RTFUZZOBS hFuzzObs);
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380 |
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381 | /**
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382 | * Queries the internal fuzzing context of the given observer.
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383 | *
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384 | * @returns IPRT status code.
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385 | * @param hFuzzObs The fuzzing observer handle.
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386 | * @param phFuzzCtx Where to store the handle to the fuzzing context on success.
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387 | *
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388 | * @note The fuzzing context handle should be released with RTFuzzCtxRelease() when not used anymore.
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389 | */
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390 | RTDECL(int) RTFuzzObsQueryCtx(RTFUZZOBS hFuzzObs, PRTFUZZCTX phFuzzCtx);
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391 |
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392 | /**
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393 | * Queries the current statistics for the given fuzzing observer.
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394 | *
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395 | * @returns IPRT status code.
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396 | * @param hFuzzObs The fuzzing observer handle.
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397 | * @param pStats Where to store the statistics to.
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398 | */
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399 | RTDECL(int) RTFuzzObsQueryStats(RTFUZZOBS hFuzzObs, PRTFUZZOBSSTATS pStats);
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400 |
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401 | /**
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402 | * Sets the temp directory for the given fuzzing observer.
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403 | *
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404 | * @returns IPRT status code.
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405 | * @param hFuzzObs The fuzzing observer handle.
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406 | * @param pszTmp The temp directory path.
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407 | */
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408 | RTDECL(int) RTFuzzObsSetTmpDirectory(RTFUZZOBS hFuzzObs, const char *pszTmp);
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409 |
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410 | /**
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411 | * Sets the directory to store results to.
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412 | *
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413 | * @returns IPRT status code.
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414 | * @param hFuzzObs The fuzzing observer handle.
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415 | * @param pszResults The path to store the results.
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416 | */
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417 | RTDECL(int) RTFuzzObsSetResultDirectory(RTFUZZOBS hFuzzObs, const char *pszResults);
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418 |
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419 | /**
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420 | * Sets the binary to run for each fuzzed input.
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421 | *
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422 | * @returns IPRT status code.
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423 | * @param hFuzzObs The fuzzing observer handle.
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424 | * @param pszBinary The binary path.
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425 | * @param enmInputChan The input channel to use.
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426 | */
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427 | RTDECL(int) RTFuzzObsSetTestBinary(RTFUZZOBS hFuzzObs, const char *pszBinary, RTFUZZOBSINPUTCHAN enmInputChan);
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428 |
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429 | /**
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430 | * Sets additional arguments to run the binary with.
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431 | *
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432 | * @returns IPRT status code.
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433 | * @param hFuzzObs The fuzzing observer handle.
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434 | * @param papszArgs Pointer to the array of arguments.
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435 | * @param cArgs Number of arguments.
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436 | */
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437 | RTDECL(int) RTFuzzObsSetTestBinaryArgs(RTFUZZOBS hFuzzObs, const char * const *papszArgs, unsigned cArgs);
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438 |
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439 | /**
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440 | * Starts fuzzing the set binary.
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441 | *
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442 | * @returns IPRT status code.
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443 | * @param hFuzzObs The fuzzing observer handle.
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444 | * @param cProcs Number of processes to run simulteanously,
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445 | * 0 will create as many processes as there are CPUs available.
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446 | */
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447 | RTDECL(int) RTFuzzObsExecStart(RTFUZZOBS hFuzzObs, uint32_t cProcs);
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448 |
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449 | /**
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450 | * Stops the fuzzing process.
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451 | *
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452 | * @returns IPRT status code.
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453 | * @param hFuzzObs The fuzzing observer handle.
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454 | */
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455 | RTDECL(int) RTFuzzObsExecStop(RTFUZZOBS hFuzzObs);
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456 |
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457 |
|
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458 | /**
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459 | * A fuzzing master program.
|
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460 | *
|
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461 | * @returns Program exit code.
|
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462 | *
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463 | * @param cArgs The number of arguments.
|
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464 | * @param papszArgs The argument vector. (Note that this may be
|
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465 | * reordered, so the memory must be writable.)
|
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466 | */
|
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467 | RTR3DECL(RTEXITCODE) RTFuzzCmdMaster(unsigned cArgs, char **papszArgs);
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468 |
|
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469 |
|
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470 | /**
|
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471 | * Client input consumption callback.
|
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472 | *
|
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473 | * @returns IPRT status code.
|
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474 | * @retval VINF_SUCCESS the fuzzed code accepted the input.
|
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475 | * @retval VERR_* the client rejected the input while parsing it.
|
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476 | * @param pvBuf The buffer containing the input data.
|
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477 | * @param cbBuf Size of the buffer in bytes.
|
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478 | * @param pvUser Opaque user data.
|
---|
479 | */
|
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480 | typedef DECLCALLBACK(int) FNFUZZCLIENTCONSUME(const void *pvBuf, size_t cbBuf, void *pvUser);
|
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481 | /** Pointer to a client consumption callback. */
|
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482 | typedef FNFUZZCLIENTCONSUME *PFNFUZZCLIENTCONSUME;
|
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483 |
|
---|
484 | /**
|
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485 | * A fuzzing client program for more efficient fuzzing.
|
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486 | *
|
---|
487 | * @returns Program exit code.
|
---|
488 | *
|
---|
489 | * @param cArgs The number of arguments.
|
---|
490 | * @param papszArgs The argument vector. (Note that this may be
|
---|
491 | * reordered, so the memory must be writable.)
|
---|
492 | * @param pfnConsume Input data consumption callback.
|
---|
493 | * @param pvUser Opaque user data to pass to the callback.
|
---|
494 | */
|
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495 | RTR3DECL(RTEXITCODE) RTFuzzCmdFuzzingClient(unsigned cArgs, char **papszArgs, PFNFUZZCLIENTCONSUME pfnConsume, void *pvUser);
|
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496 | /** @} */
|
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497 |
|
---|
498 | RT_C_DECLS_END
|
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499 |
|
---|
500 | #endif /* !IPRT_INCLUDED_fuzz_h */
|
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501 |
|
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